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Water consumption ensures crop production and grain security, and is influenced by many factors. Analyzing the impact factors of water consumption during crop production will be beneficial to the full use of water resources and crop growth. Jilin Province is one of the major crop production areas in China and is facing water shortages. Using the water footprint as an indicator, this study evaluated the water consumption of crop production in Jilin Province during 2000–2016, explored the impacts of climatic and agricultural input factors on the water consumption of crop production, and identified the most influential factors in years under different levels of rainfall. The results indicate that the crop water footprint exhibited a decreasing trend during 2000–2016, and the most influential factors of the crop water footprint changed over the years with different levels of rainfall. Precipitation and the effective irrigation area were the most influential factors in the drought year, and accumulated temperature, machinery power, and chemical fertilizer consumption were the most influential factors in normal and humid years. The most influential factors of the crop water footprint differed in different regions with the differences in natural and human interfered conditions. Identifying the impacts of the most influential factors on the water consumption of crop production would be conducive to optimizing farmland management and achieving sustainable agricultural production.
Xiaoxue Zheng; Lijie Qin; Hongshi He. Impacts of Climatic and Agricultural Input Factors on the Water Footprint of Crop Production in Jilin Province, China. Sustainability 2020, 12, 6904 .
AMA StyleXiaoxue Zheng, Lijie Qin, Hongshi He. Impacts of Climatic and Agricultural Input Factors on the Water Footprint of Crop Production in Jilin Province, China. Sustainability. 2020; 12 (17):6904.
Chicago/Turabian StyleXiaoxue Zheng; Lijie Qin; Hongshi He. 2020. "Impacts of Climatic and Agricultural Input Factors on the Water Footprint of Crop Production in Jilin Province, China." Sustainability 12, no. 17: 6904.
Deyeuxia purpurea, a low-altitude species, has been expanding upwards into alpine tundra, and this upward expansion is causing serious ecological consequences. However, few studies have been performed regarding its effects on soil faunal communities. We examine how the upward expansion of D. purpurea affects the abundance, richness, and diversity of soil mesofauna, and evaluate how different taxa of soil mesofauna respond to the upward expansion of D. purpurea in the alpine tundra of Changbai Mountains, northeast China. A total of 128 soil mesofaunal samples were collected from four treatments, namely high upward expansion (HU), medium upward expansion (MU), low upward expansion (LU), and native plant habitats (NP). The results revealed that the abundance of soil mesofauna was increased with the rise of D. purpurea upward expansion, and the taxonomic composition varied with the different levels of D. purpurea upward expansion in the alpine tundra of the Changbai Mountains. No unique taxa were collected in the native plant habitats, and the upward expansion of D. purpurea promoted the colonization of predatory invertebrates. Isotomidae and Gamasida responded positively to the herbaceous plant upward expansion, and thus they were considered to be a positive indicator of upward expansion. Hypogastruridae and Enchytraeidae responded relatively negatively, while Oribatida, Actinedida, and Pseudachorutidae had ambivalent responses to the upward expansion. Overall, the abundance of soil mesofauna can indicate the levels of the upward expansion of D. purpurea. Soil mesofaunal guild characteristics were altered by the upward expansion. The different taxa of soil mesofauna responded to herbaceous plants’ upward expansion to various degrees. Therefore, this study provide evidence supporting the fact that the abundance of soil mesofauna can indicate the levels of upward expansion of D. purpurea, but the responses of soil mesofauna to the upward expansion of D. purpurea differ among their taxa.
Yan Tao; Zhongqiang Wang; Chen Ma; Hongshi He; Jiawei Xu; Yinghua Jin; Haixia Wang; Xiaoxue Zheng. Soil Mesofauna Respond to the Upward Expansion of Deyeuxia purpurea in the Alpine Tundra of the Changbai Mountains, China. Plants 2019, 8, 615 .
AMA StyleYan Tao, Zhongqiang Wang, Chen Ma, Hongshi He, Jiawei Xu, Yinghua Jin, Haixia Wang, Xiaoxue Zheng. Soil Mesofauna Respond to the Upward Expansion of Deyeuxia purpurea in the Alpine Tundra of the Changbai Mountains, China. Plants. 2019; 8 (12):615.
Chicago/Turabian StyleYan Tao; Zhongqiang Wang; Chen Ma; Hongshi He; Jiawei Xu; Yinghua Jin; Haixia Wang; Xiaoxue Zheng. 2019. "Soil Mesofauna Respond to the Upward Expansion of Deyeuxia purpurea in the Alpine Tundra of the Changbai Mountains, China." Plants 8, no. 12: 615.
Grey water footprints (GWFs) can be used as an indicator to describe the influence of diffuse pollution on water environments and identify major contaminants. To improve the calculation of GWF, we conducted a field experiment with combinations of different slopes and fertilizer types on maize production in the black soil region of China. The goals of this study were to determine the actual amount of water used to dilute the pollutants; to explore the changes in the GWF under different slopes and fertilization types; and to identify the most critical pollutants and determine if they are consistent with those identified in previous studies. The results showed that the average GWFs of maize production were much different in 2016 and 2017. The GWFs of the 5° plots were much larger than those of the 1° plots and 3° plots, and the GWFs of the mineral fertilizer plots were larger than those of the organic manure plots in most cases. The loss rates of total nitrogen (TN) in the mineral fertilizer plots and the organic manure plots were all 0.2% in 2016 and 2.7% and 3.1% in 2017, respectively, which was much lower than 10% as reported in most articles. The most frequent critical pollutant was total nitrogen (TN), while total phosphorus (TP) and chemical oxygen demand (COD) were also critical pollutants in some cases, which differed somewhat from the results of previous studies. The uneven annual distribution of rainfall led to large interannual differences in the size of the GWFs. Therefore, using field observations, pollutant loss from agricultural ecosystems could be determined in line with local conditions, which should provide a reference for relevant measures to control diffuse pollution.
Hongying Li; Yufei Wang; Lijie Qin; Hongshi He; Tianyu Zhang; Jianqin Wang; Xiaoxue Zheng. Effects of different slopes and fertilizer types on the grey water footprint of maize production in the black soil region of China. Journal of Cleaner Production 2019, 246, 119077 .
AMA StyleHongying Li, Yufei Wang, Lijie Qin, Hongshi He, Tianyu Zhang, Jianqin Wang, Xiaoxue Zheng. Effects of different slopes and fertilizer types on the grey water footprint of maize production in the black soil region of China. Journal of Cleaner Production. 2019; 246 ():119077.
Chicago/Turabian StyleHongying Li; Yufei Wang; Lijie Qin; Hongshi He; Tianyu Zhang; Jianqin Wang; Xiaoxue Zheng. 2019. "Effects of different slopes and fertilizer types on the grey water footprint of maize production in the black soil region of China." Journal of Cleaner Production 246, no. : 119077.
The harsh environmental conditions in alpine tundra exert a significant influence on soil macro-arthropod communities, yet few studies have been performed regarding the effects of vegetation heterogeneity on these communities. In order to better understand this question, a total of 96 soil macro-arthropod samples were collected from four habitats in the Changbai Mountains in China, namely, the Vaccinium uliginosum habitat, Sanguisorba sitchensis habitat, Rhododendron aureum habitat, and Deyeuxia angustifolia habitat. The results revealed that the taxonomic composition of the soil macro-arthropods varied among the habitats, and that dissimilarities existed in these communities. The abundance, richness and diversity in the D. angustifolia habitat were all at their maximum during the sampling period. The vegetation heterogeneity affected the different taxa of the soil macro-arthropods at various levels. In addition, the vegetation heterogeneity had direct effects not only on soil macro-arthropod communities, but also indirectly impacted the abundance, richness and diversity by altering the soil fertility and soil texture. Overall, our results provide experimental evidence that vegetation heterogeneity can promote the abundance, richness and diversity of soil macro-arthropods, yet the responses of soil macro-arthropods to vegetation heterogeneity differed among their taxa.
Yan Tao; Zhongqiang Wang; Chen Ma; Hongshi He; Jiawei Xu; Yinghua Jin; Haixia Wang; Xiaoxue Zheng. Vegetation Heterogeneity Effects on Soil Macro-Arthropods in an Alpine Tundra of the Changbai Mountains, China. Plants 2019, 8, 418 .
AMA StyleYan Tao, Zhongqiang Wang, Chen Ma, Hongshi He, Jiawei Xu, Yinghua Jin, Haixia Wang, Xiaoxue Zheng. Vegetation Heterogeneity Effects on Soil Macro-Arthropods in an Alpine Tundra of the Changbai Mountains, China. Plants. 2019; 8 (10):418.
Chicago/Turabian StyleYan Tao; Zhongqiang Wang; Chen Ma; Hongshi He; Jiawei Xu; Yinghua Jin; Haixia Wang; Xiaoxue Zheng. 2019. "Vegetation Heterogeneity Effects on Soil Macro-Arthropods in an Alpine Tundra of the Changbai Mountains, China." Plants 8, no. 10: 418.